Metal and non-linear object composite detector

Abstract

The invention provides a metal and non-linear object composite detector which comprises a high frequency signal source, a radiofrequency emission unit, a first filter combination, a local oscillator unit, a frequency mixing unit, a second filter combination, an intermediate-frequency demodulation unit, a panel control module, an alarm output module, a signal processing and controlling unit, a sampling unit, an amplification unit, a low pass filter, a phase detector, a low frequency signal source, a low frequency emission unit, a preamplifier and a combined probe. According to the detector, a non-linear node harmonic wave detection technology is combined with a metal detection technology, a suspected object can be detected in a non-contact manner, both a metal object and a non-linear node object can be discovered, and the detector is capable of distinguishing the two kinds of objects, and can be applied to security inspection in places as airports, stations and conference areas as well as to technical inspections in special places which are used for diplomacy or secrecy of police, national security department, and the like.

Description

technical field [0001] The invention relates to the security field, in particular, the invention relates to a composite detection device for non-contact detection of metal targets and nonlinear targets. Background technique [0002] The Chinese patent No. 200420114716.6 and the patent document titled "Electronic Target Detection Device" disclose a detection technology for nonlinear node targets, but this technology only has the detection capability of nonlinear targets and cannot detect homogeneous metals. probing. Metal detectors currently on the market have metal detection capabilities, but none of them can identify nonlinear junction targets. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a compound detection device for metal and nonlinear targets, so as to realize the purpose of detecting and distinguishing metal targets and nonlinear targets. [0004] In order to solve the above technical problems, the pr...

AI Technical Summary

Problems solved by technology

[0002] The Chinese patent No. 200420114716.6 and the patent document titled "Electronic Target Detection Device" disclose a detection technology for nonlinear node targets, but this technology only has the detection capability of nonlinear targets and cannot detect homogeneous metals. detection

Metal detectors currently on the market have metal detection capabilities, but none of them can identify nonlinear junction targets

Images